RECON: TNO occultation with 03YQ179

Event between 03YQ179 and star GA1140:03215625 with event index number of 1074671

Geocentric closest approach at 2022/03/05 15:36:17 UTC

J2000 position of star is 09:56:22.8 +25:26:16
Equinox of date position of star is 09:57:36.7 +25:20:01
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 121 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=22.8

TNO is 37.3 AU from the Sun and 36.4 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 200 seconds.
The 1-sigma cross-track error in the shadow position is 2209 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 10.6 sec chord
Diameter=95.7 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 03YQ179, (2022/03/05 15:31UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:33.1 +11:51:29  1.3 13.76 129
24Mu Leo       09:54:01.2 +25:54:05  3.9  0.99 120
PPM 099961     09:57:21.3 +25:53:36  8.4  0.57 121
PPM 099956     09:56:57.0 +25:06:36  9.5  0.27 121
03YQ179        09:57:38.2 +25:19:54 14.2       121
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 03YQ179, (2022/03/05 15:31UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 13.76 129
24Mu Leo       09:52:45.5 +26:00:24  3.9  0.99 120
PPM 099961     09:56:05.7 +25:59:58  8.4  0.57 121
PPM 099956     09:55:41.6 +25:12:57  9.5  0.27 121
03YQ179        09:56:22.8 +25:26:16 14.2       121
Positions are for J2000

Event circumstances last updated at 2021/10/02 02:46:31 UT

Marc W. Buie, Southwest Research Institute

RECON